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Implementation and Validation of a Laminar-to-Turbulent Transition Model in the Wind-US Code (2008)

Denissen, Nicholas A. ; Yoder, Dennis A. ; Georgiadis, Nicholas J.

In: CASI

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Publication Date: 2019-07-12

Description: A bypass transition model has been implemented in the Wind-US Reynolds Averaged Navier-Stokes (RANS) solver. The model is based on the Shear Stress Transport (SST) turbulence model and was built starting from a previous SST-based transition model. Several modifications were made to enable (1) consistent solutions regardless of flow field initialization procedure and (2) fully turbulent flow beyond the transition region. This model is intended for flows where bypass transition, in which the transition process is dominated by large freestream disturbances, is the key transition mechanism as opposed to transition dictated by modal growth. Validation of the new transition model is performed for flows ranging from incompressible to hypersonic conditions.

Keywords: Aerodynamics

Type: NASA/TM-2008-215451 , E-16671

Format: application/pdf

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